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National Chung Hsing University Institutional Repository - NCHUIR > 學術研究中心 > 生物科技發展中心 > 依資料類型分類 > 期刊論文 >  Optimization of lipase-catalyzed biodiesel by isopropanolysis in a continuous packed-bed reactor using response surface methodology

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/130923

標題: Optimization of lipase-catalyzed biodiesel by isopropanolysis in a continuous packed-bed reactor using response surface methodology
作者: Chang, C.;Chen, J.H.;Chang, C.M.J.;Wu, T.T.;Shieh, C.J.
誠, 張;陳建華;張傑明;謝淳仁
關鍵字: candida-antarctica lipase;cotton seed oil;transesterification;alcoholysis;solvent
日期: 2009
Issue Date: 2012-12-07 16:11:00 (UTC+8)
關連: New Biotechnology, Volume 26, Issue 3-4, Page(s) 187-192.
摘要: Isopropanolysis reactions were performed using triglycerides with immobilized lipase in a solvent-free environment. This study modeled the degree of isopropanolysis of soybean oil in a continuous packed-bed reactor when Novozym (R) 435 was used as the biocatalyst. Response surface methodology (RSM) and three-level-three-factor Box-Behnken design were employed to evaluate the effects of synthesis parameters, reaction temperature (degrees C), flow rate (mL/min) and substrate molar ratio of isopropanol to soybean oil, on the percentage molar conversion of biodiesel by transesterification. The results show that flow rate and temperature have a significant effect on the percentage of molar conversion. On the basis of ridge max analysis, the optimum conditions for synthesis were as follows: flow rate 0.1 mL/min, temperature 51.5 degrees C and substrate molar ratio 1:4.14. The predicted value was 76.62 +/- 1.52% and actual experimental value was 75.62 +/- 0.81% molar conversion. Moreover, continuous enzymatic process for seven days did not show any appreciable decrease in the percent of molar conversion (75%). This work demonstrates the applicability of lipase catalysis to prepare isopropyl esters by transesterification in solvent-free system with a continuous packed-bed reactor for industrial production.
Relation: New Biotechnology
Appears in Collections:[依教師分類] 張傑明
[依資料類型分類] 期刊論文
[依教師分類] 陳建華

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